Abstract
Since engineering properties of organic soil are inferior to those of other soft soils, it is often viewed as problematic. Highly organic soil is generally associated with high magnitude and rates of creep and high compressibility. Considering the high surface electrical charge associated with peat, it makes it a good environment for chemical admixtures to flow under Direct Current (DC) electrical field. Two environmentally friendly admixtures namely; sodium silicate, and aluminum hydroxide, were used to stabilize the peat. Electrokinetic injection technique is also used in order to carry the stabilizers inside the peat. The microstructures of the treated peat were evaluated by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer analysis (EDX). Results of the electrochemical and physicochemical properties of treated soil during and after the EK process are presented and discussed. The stronger flocculation achieved resulted to higher shear strength of peat among the EK cell.
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